From what I remember, it's around the same size as a sea bass, yes. Anything smaller than that, and you can just run near the water's surface to make the fish go away and then use fish bait to spawn another one.Thanks for all the responses! I've already got a pond on my island and some fish bait so i'll go from there!
(Also, just curious. But how large is the carp shadow. Is it the same as a sea bass?)